The PB30 floating ball holder for the DO30 features a design which minimizes fouling by the process. A brass ring around the sensor facilitates a check for membrane integrity, and helps to eliminate any deposits of algae, making a cleaning system unnecessary for the model PB30. Maintenance is very simple, with only periodic inspection and calibration needed.

The FD30 PVC immersion fitting is designed for installing the DO30 sensor in tanks, open vessels and drains. It can be supplied in lengths between 0.5 and 2.0 meter. Flange mounting is also possible. In applications with a heavy load of solids the use of a cleaning system is recommended, so an option, a "jet cleaner" is available for the immersion fitting. The use of this device can extend the continuous measurement period and eases maintenance.